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			119 lines
		
	
	
	
		
			3.4 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			119 lines
		
	
	
	
		
			3.4 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
| // Copyright 2023 Prometheus Team
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| // Licensed under the Apache License, Version 2.0 (the "License");
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| // you may not use this file except in compliance with the License.
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| // You may obtain a copy of the License at
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| //
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| // http://www.apache.org/licenses/LICENSE-2.0
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| //
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| // Unless required by applicable law or agreed to in writing, software
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| // distributed under the License is distributed on an "AS IS" BASIS,
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| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| // See the License for the specific language governing permissions and
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| // limitations under the License.
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| 
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| package procfs
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| 
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| import (
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| 	"bufio"
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| 	"fmt"
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| 	"os"
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| 	"strconv"
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| 	"strings"
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| )
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| 
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| // TLSStat struct represents data in /proc/net/tls_stat.
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| // See https://docs.kernel.org/networking/tls.html#statistics
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| type TLSStat struct {
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| 	// number of TX sessions currently installed where host handles cryptography
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| 	TLSCurrTxSw int
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| 	// number of RX sessions currently installed where host handles cryptography
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| 	TLSCurrRxSw int
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| 	// number of TX sessions currently installed where NIC handles cryptography
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| 	TLSCurrTxDevice int
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| 	// number of RX sessions currently installed where NIC handles cryptography
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| 	TLSCurrRxDevice int
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| 	//number of TX sessions opened with host cryptography
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| 	TLSTxSw int
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| 	//number of RX sessions opened with host cryptography
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| 	TLSRxSw int
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| 	// number of TX sessions opened with NIC cryptography
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| 	TLSTxDevice int
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| 	// number of RX sessions opened with NIC cryptography
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| 	TLSRxDevice int
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| 	// record decryption failed (e.g. due to incorrect authentication tag)
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| 	TLSDecryptError int
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| 	//  number of RX resyncs sent to NICs handling cryptography
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| 	TLSRxDeviceResync int
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| 	// number of RX records which had to be re-decrypted due to TLS_RX_EXPECT_NO_PAD mis-prediction. Note that this counter will also increment for non-data records.
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| 	TLSDecryptRetry int
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| 	// number of data RX records which had to be re-decrypted due to TLS_RX_EXPECT_NO_PAD mis-prediction.
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| 	TLSRxNoPadViolation int
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| }
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| 
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| // NewTLSStat reads the tls_stat statistics.
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| func NewTLSStat() (TLSStat, error) {
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| 	fs, err := NewFS(DefaultMountPoint)
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| 	if err != nil {
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| 		return TLSStat{}, err
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| 	}
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| 
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| 	return fs.NewTLSStat()
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| }
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| 
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| // NewTLSStat reads the tls_stat statistics.
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| func (fs FS) NewTLSStat() (TLSStat, error) {
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| 	file, err := os.Open(fs.proc.Path("net/tls_stat"))
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| 	if err != nil {
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| 		return TLSStat{}, err
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| 	}
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| 	defer file.Close()
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| 
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| 	var (
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| 		tlsstat = TLSStat{}
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| 		s       = bufio.NewScanner(file)
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| 	)
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| 
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| 	for s.Scan() {
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| 		fields := strings.Fields(s.Text())
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| 
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| 		if len(fields) != 2 {
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| 			return TLSStat{}, fmt.Errorf("%w: %q line %q", ErrFileParse, file.Name(), s.Text())
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| 		}
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| 
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| 		name := fields[0]
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| 		value, err := strconv.Atoi(fields[1])
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| 		if err != nil {
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| 			return TLSStat{}, err
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| 		}
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| 
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| 		switch name {
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| 		case "TlsCurrTxSw":
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| 			tlsstat.TLSCurrTxSw = value
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| 		case "TlsCurrRxSw":
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| 			tlsstat.TLSCurrRxSw = value
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| 		case "TlsCurrTxDevice":
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| 			tlsstat.TLSCurrTxDevice = value
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| 		case "TlsCurrRxDevice":
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| 			tlsstat.TLSCurrRxDevice = value
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| 		case "TlsTxSw":
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| 			tlsstat.TLSTxSw = value
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| 		case "TlsRxSw":
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| 			tlsstat.TLSRxSw = value
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| 		case "TlsTxDevice":
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| 			tlsstat.TLSTxDevice = value
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| 		case "TlsRxDevice":
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| 			tlsstat.TLSRxDevice = value
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| 		case "TlsDecryptError":
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| 			tlsstat.TLSDecryptError = value
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| 		case "TlsRxDeviceResync":
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| 			tlsstat.TLSRxDeviceResync = value
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| 		case "TlsDecryptRetry":
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| 			tlsstat.TLSDecryptRetry = value
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| 		case "TlsRxNoPadViolation":
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| 			tlsstat.TLSRxNoPadViolation = value
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| 		}
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| 
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| 	}
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| 
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| 	return tlsstat, s.Err()
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| }
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